[{
  text: 'Forms',
  iconCls: 'fa fa-wpforms',
  state: 'open',
  children: [{
    text: 'Form Element'
  },{
    text: 'Wizard'
  },{
    text: 'File Upload'
  }]
},{
  text: 'Mail',
  iconCls: 'fa fa-at',
  selected: true,
  children: [{
    text: 'Inbox'
  },{
    text: 'Sent'
  },{
    text: 'Trash',
    children: [{
      text: 'Item1'
    },{
      text: 'Item2'
    }]
  }]
},{
  text: 'Layout',
  iconCls: 'fa fa-table',
  children: [{
    text: 'Panel'
  },{
    text: 'Accordion'
  },{
    text: 'Tabs'
  }]
}]